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Finding the Fourth Proportional to 13,255.66, 18,292.82 and 7,287.43

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Solution

The fourth proportional to 13,255.66, 18,292.82 and 7,287.43 is: 10,056.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,255.66 : 18,292.82 = 7,287.43 : x
  2. Step 2: Convert to fraction form
    13,255.66/18,292.82 = 7,287.43/x
  3. Step 3: Cross multiply
    13,255.66x = 18,292.82 × 7,287.43
  4. Step 4: Simplify right side
    13,255.66x = 133,307,645.25
  5. Step 5: Solve for x
    x = 133,307,645.25/13,255.66
  6. Step 6: Final answer
    x = 10,056.66

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.